<!DOCTYPE html>
<html>
<head lang="en">
  <meta charset="UTF-8">
  <title>时间</title>
  <script src="../../jquery-3.1.1.min.js"></script>
  <script src="timer.js"></script>
</head>
<body>
<div class="timer"></div>
<div class="timer01"></div>
</body>
</html>